“Experience is, for me, the highest authority. The touchstone of validity is my own experience. No other person's ideas, and none of my own ideas, are as authoritative as my experience. It is to experience that I must return again and again, to discover a closer approximation to truth as it is in the process of becoming in me. Neither the Bible nor the prophets -- neither Freud nor research -- neither the revelations of God nor man -- can take precedence over my own direct experience. My experience is not authoritative because it is infallible. It is the basis of authority because it can always be checked in new primary ways. In this way its frequent error or fallibility is always open to correction.”

2014, Remarks to the People of Estonia (September 2014)

Letter to Lieutenant Colonel Charles Marshall (September 1870)
1870s
Context: My experience of men has neither disposed me to think worse of them or indisposed me to serve them; nor in spite of failures, which I lament, of errors which I now see and acknowledge; or of the present aspect of affairs; do I despair of the future.
The truth is this: The march of Providence is so slow, and our desires so impatient; the work of progress is so immense and our means of aiding it so feeble; the life of humanity is so long, that of the individual so brief, that we often see only the ebb of the advancing wave and are thus discouraged. It is history that teaches us to hope.

Words I Wish I Wrote (1997)
Context: My convictions have validity for me because I have experimented with the compounds of ideas of others in the laboratory of my mind. And I've tested the results in the living out of my life. At twenty-one, I had drawn an abstract map based on the evidence of others. At sixty, I have accumulated a practical guide grounded in my own experience. At twenty-one, I could discuss transportation theory with authority. At sixty, I know which bus to catch to go where, what the fare is, and how to get back home again. It is not my bus, but I know how to use it.

Source: The Hero and the Crown

Legitimacy and Force (1988), 130.
Jeane Kirkpatrick talking about a report of the Human Rights Commission in Geneva, which she termed "a letter to Santa Claus." as in A Human Rights Approach to Food and Nutrition Policies and Programmes by Peter L. Pellett http://www.unsystem.org/SCN/archives/scnnews18/ch06.htm, who quotes The Hypocrisy Of It All by Noam Chomsky (1999) http://www.middleeast.org/archives/1999_01_25.htm

http://www.girlscantwhat.com/2007/10/15/i-am-my-own-experiment/
Variant: I am my own experiment. I am my own work of art.

Indian Spirituality and Life (1919)
Context: To the Indian mind the least important part of religion is its dogma; the religious spirit matters, not the theological credo. On the contrary to the Western mind a fixed intellectual belief is the most important part of a cult; it is its core of meaning, it is the thing that distinguishes it from others. For it is its formulated beliefs that make it either a true or a false religion, according as it agrees or does not agree with the credo of its critic. This notion, however foolish and shallow, is a necessary consequence of the Western idea which falsely supposes that intellectual truth is the highest verity and, even, that there is no other. The Indian religious thinker knows that all the highest eternal verities are truths of the spirit. The supreme truths are neither the rigid conclusions of logical reasoning nor the affirmations of credal statement, but fruits of the soul's inner experience. Intellectual truth is only one of the doors to the outer precincts of the temple. And since intellectual truth turned towards the Infinite must be in its very nature many-sided and not narrowly one, the most varying intellectual beliefs can be equally true because they mirror different facets of the Infinite. However separated by intellectual distance, they still form so many side-entrances which admit the mind to some faint ray from a supreme Light. There are no true and false religions, but rather all religions are true in their own way and degree. Each is one of the thousand paths to the One Eternal.

Source: The Politics of Experience (1967), Ch. 1 : Experience as evidence
Context: Social phenomenology is the science of my own and of others' experience. It is concerned with the relation between my experience of you and your experience of me. That is, with inter-experience. It is concerned with your behaviour and my behaviour as I experience it, and your and my behaviour as you experience it.

White Man, Listen! (1957)